Issue 9, 2015

Experimental and theoretical investigation of tetra-oxidized terarylenes with high-contrast fluorescence switching

Abstract

Tetra-oxidized terarylenes having ethyl groups at the reactive carbon atoms are synthesized and their photophysical properties are studied. Their closed-ring isomers exhibit much lower cycloreversion quantum yields and relatively high fluorescence quantum yields. Introducing ethyl groups at the reactive carbon atoms provides an improvement in the fluorescence quantum yields by the intramolecular hydrogen bonding in the closed-ring isomers to reduce the non-radiative decay processes coupled with molecular motions. Quantum chemical calculations were carried out to study their geometrical and optical properties, which agree well with the experimental findings.

Graphical abstract: Experimental and theoretical investigation of tetra-oxidized terarylenes with high-contrast fluorescence switching

Supplementary files

Article information

Article type
Paper
Submitted
12 Jun 2015
Accepted
15 Jul 2015
First published
16 Jul 2015

New J. Chem., 2015,39, 7397-7402

Author version available

Experimental and theoretical investigation of tetra-oxidized terarylenes with high-contrast fluorescence switching

R. Kanazawa, M. Taguchi, T. Nakashima and T. Kawai, New J. Chem., 2015, 39, 7397 DOI: 10.1039/C5NJ01490E

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